Dear {{user.username}}
    <pre>
    Congratulations on your successful registration.
    please <a href="{{ url_for('auth.confirm',token=token,_external=True) }}">click here</a> to confirm your account.

    if can not click the link ,please copy this URL to the browser

    {{ url_for('auth.confirm',token=token,_external=True) }}

    </pre>

